<template>
  <div class="add_container">
    <el-card class="box-card">
      <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>添加商品</el-breadcrumb-item>
      </el-breadcrumb>

      <el-alert title="添加商品信息"
                center
                show-icon
                :closable="false"
                type="info">
      </el-alert>

      <el-row>
        <el-steps :space="300"
                  :active="activeIndex - 0"
                  finish-status="success"
                  align-center>
          <el-step title="基本信息"></el-step>
          <el-step title="商品参数"></el-step>
          <el-step title="商品属性"></el-step>
          <el-step title="商品图片"></el-step>
          <el-step title="商品内容"></el-step>
          <el-step title="完成"></el-step>
        </el-steps>
      </el-row>

      <el-form :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-position="left"
               label-width="100px">
        <el-tabs :tab-position="tabPosition"
                 v-model="activeIndex"
                 :before-leave="beforeTabLeave"
                 @tab-click="tabClicked">
          <el-tab-pane label="基本信息"
                       name="0">
            <el-form-item label="商品名称"
                          prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格"
                          prop="goods_price">
              <el-input type="number"
                        v-model="addForm.goods_price"></el-input>
            </el-form-item>
            <el-form-item label="商品重量"
                          prop="goods_weight">
              <el-input type="number"
                        v-model="addForm.goods_weight"></el-input>
            </el-form-item>
            <el-form-item label="商品数量"
                          prop="goods_number">
              <el-input type="number"
                        v-model="addForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类"
                          prop="goods_cat">
              <el-cascader expand-trigger="hover"
                           :props="cateProps"
                           :options="cateList"
                           v-model="addForm.goods_cat"
                           @change="handleChange"></el-cascader>
            </el-form-item>

          </el-tab-pane>
          <el-tab-pane name="1"
                       label="商品参数">
            <el-form-item :label="item.attr_name"
                          v-for="item in manyTableData"
                          :key="item.attr_id"
                          prop="goods_cat">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox :label="item2"
                             v-for="(item2, i) in item.attr_vals"
                             :key="i"
                             border></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane class="tab2"
                       name="2"
                       label="商品属性">
            <el-form-item :label="item.attr_name"
                          v-for="item in onlyTableData"
                          :key="item.attr_id">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>

          <el-tab-pane name="3"
                       label="商品图片">
            <el-upload :action="uploadURL"
                       :on-preview="handlePreview"
                       :on-remove="handleRemove"
                       list-type="picture"
                       :headers="headerObj"
                       :on-success="handleSuccess">
              <el-button size="small"
                         type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane name="4"
                       label="商品内容">
            <quill-editor v-model="addForm.goods_introduce">
            </quill-editor>
            <el-button type="primary"
                       class="editBtn"
                       @click="add">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>

      <el-dialog title="图片预览"
                 :visible.sync="previewVisible"
                 width="30%">
        <img :src="previewPath"
             alt=""
             class="imgView">
      </el-dialog>

    </el-card>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data () {
    return {
      activeIndex: 0,
      tabPosition: 'left',
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_cat: [
          { required: true, message: '请输入商品分类', trigger: 'blur' }
        ]
      },
      cateList: [],
      cateProps: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children'
      },
      manyTableData: [],
      onlyTableData: [],
      uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
      headerObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      previewPath: '',
      previewVisible: false

    }
  },
  created () {
    this.getCateList()
  },
  methods: {
    async getCateList () {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品分类数据失败！')
      }
      this.cateList = res.data
      // console.log(this.cateList)
    },
    handleChange () {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
      // console.log(this.addForm.goods_cat)
    },
    beforeTabLeave (toName, fromName) {
      // toName 要去的Tab页面
      // fromName 当前点击的Tab页面
      // console.log(toName + 'toName')
      // console.log(fromName + 'fromName')
      if (fromName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请先选择商品分类')
        return false
      }
    },
    async tabClicked () {
      if (this.activeIndex === '1') {
        // console.log(this.activeIndex)
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, {
          params: { sel: 'many' }
        })
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数列表户数失败！')
        }
        res.data.forEach(item => {
          item.attr_vals = item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })
        this.$message.success('获取动态参数列表户数成功！')
        this.manyTableData = res.data
        // console.log(this.manyTableData)
      } else if (this.activeIndex === '2') {
        // console.log(this.activeIndex)
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, {
          params: { sel: 'only' }
        })
        if (res.meta.status !== 200) {
          return this.$message.error('获取静态属性列表户数失败！')
        }
        this.$message.success('获取静态属性列表户数成功！')
        this.onlyTableData = res.data
        // console.log(this.onlyTableData)
      }
    },
    handlePreview (imgFile) {
      this.previewPath = imgFile.response.data.url
      this.previewVisible = true
    },
    handleRemove (file) {
      const filePath = file.response.data.tmp_path
      const i = this.addForm.pics.findIndex(item => item.pic === filePath)
      this.addForm.pics.splice(i, 1)
      // console.log(this.addForm)
    },
    handleSuccess (response) {
      // console.log(response)
      const picInfo = { pic: response.data.tmp_path }
      this.addForm.pics.push(picInfo)
      // console.log(this.addForm)
    },
    add () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error('请将表单信息填写完整，才能好提交！')
        }

        const form = _.cloneDeep(this.addForm)
        console.log(form.goods_cat)
        form.goods_cat = form.goods_cat.join(',')
        console.log(form.goods_cat)

        this.manyTableData.forEach(item1 => {
          const newInfo = {
            attr_id: item1.attr_id,
            attr_value: item1.attr_vals.join(' ')
          }
          this.addForm.attrs.push(newInfo)
        })
        this.onlyTableData.forEach(item2 => {
          const newInfo = {
            attr_id: item2.attr_id,
            attr_value: item2.attr_vals
          }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        // console.log(form)
        const { data: res } = await this.$http.post('goods', form)
        if (res.meta.status !== 201) {
          return this.$message.error('添加商品失败')
        }
        this.$message.success('添加商品成功！')
        this.$router.push('/goods')
      })
    }
  },
  computed: {
    cateId () {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>

<style lang="less" scoped>
.add_container {
  width: 85%;
  .el-alert {
    margin: 15px 0;
  }
  .el-steps {
    margin: 15px 0;
  }
  .el-step__title {
    font-size: 16px;
    line-height: 38px;
  }
  .el-tab-pane {
    margin-top: 8px;
  }

  .el-checkbox:first-child {
    margin: 0 15px 15px 0;
  }
  .el-checkbox:nth-child(n + 2) {
    margin: 0 15px 15px 0;
  }
  .el-checkbox.is-bordered + .el-checkbox.is-bordered {
    margin-left: 0px;
  }
  .tab2 .el-input {
    width: 90%;
  }
  /deep/ .tab2 .el-form-item__label {
    padding: 0;
    line-height: 3;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    width: 150px !important;
  }
  .imgView {
    width: 100%;
  }
  .quill-editor {
    width: 90%;
  }
  /deep/.ql-container {
    min-height: 330px;
  }
  .editBtn {
    margin-top: 15px;
  }
}
</style>
